激光表面织构技术调控材料摩擦学性能的研究进展OA北大核心CSTPCD

As the two main problems in various engineering applications,friction and wear may lead to adverse consequences such as mechanical component failure,energy loss,noise,and vibration.Researchers have conducted extensive research on these two problems,and the regulation of tribological properties by preparing textures on the surface of materials has become an important aspect.At present,various surface strengthening technologies such as laser cladding,physical vapor deposition,and laser surface texturing have been used to improve the wear resistance of material surfaces,among which surface texture is one of the most effective surface modification methods to improve the tribological properties of engineering materials.In recent years,various surface texture technologies have been applied to improve the material surface friction and wear resistance.Among many surface texture technologies,laser surface texture technology is widely used due to its advantages such as fast processing speed,high production efficiency,and good controllability.The work aims to review the latest progress and applications of laser surface texture,discuss the problems and solutions of current laser surface texture technology,and summarize three different laser processing methods under different processing principles,including laser direct ablation processing technology,laser interference processing technology,and laser impact processing technology,including difficult control of shape parameters.The application of liquid assisted machining technology in laser surface texture technology was introduced to solve the problems of thermal effects and recast layers in the processing area,such as poor accuracy and low flexibility.At the same time,the effects of different process parameters,including density,shape,and depth,on the tribological properties of the material were analyzed.The research status of laser surface texture technology composite coating technology was reviewed.The laser surface texture was compounded with non-metal or metal coating,and the surface texture was compounded with non-metal coating,including graphite oxide filled PTFE coating composite laser surface texture,composite hot filament chemical vapor deposition enhanced laser surface texture,and polydopamine/polytetrafluoroethylene coating composite enhanced laser surface texture.The combination of surface texture and metal coating includes composite electrohydraulic atomization to enhance laser surface texture,composite DC Magnetron sputtering to enhance laser surface texture,and composite laser cladding technology to enhance laser surface texture.Finally,the future development direction of laser surface texture in various fields is prospected.For example,the combination of laser surface texture processing technology and bionics is a direction worthy of research.Through bionics on the appearance of various animals and plants in the natural world,the focus should be put on the most influential variables to optimize the design,and further improve the tribological performance of materials.Secondly,the combination of laser surface texture processing technology and coating technology,the development of multi-layer composite coatings and texture bonding technology,and the use of laser surface texture processing technology to enhance the bonding effect between material surfaces and coatings,fully leverage the advantages of laser surface texture processing technology.Finally,the modeling and simulation research of laser surface texture takes into account the micro effects of laser on the textured surface and establishes a comprehensive simulation standard to automatically achieve the integration of experimental modeling and simulation,and establish a technical standard for laser surface texture.